For hall and closet doors, all interior doors where a simple latch is all that is required. Both knobs always free, no locking mechanism. All-metal components. Solid steel latch assembly. Seamless one-piece knob for extra strength. Easy installation. Square spindle for right or left-handed installations. six-way adjustable latch fits 2-3/8 to 2-3/4 in square corner, radius corner or drive-in applications; includes both square and 1/4 in radius corner strikes.